var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var bodyParser = require('body-parser');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var classify = require('./routes/classify');
var articleRouter = require('./routes/article');
var indexArticle = require('./routes/indexArticle');
// var cors = require('cors');
// var session = require('express-session')
var app = express();
//设置允许跨域访问该服务.
app.all('*', function (req, res, next) {
  res.header('Access-Control-Allow-Origin', '*');
  //Access-Control-Allow-Headers ,可根据浏览器的F12查看,把对应的粘贴在这里就行
  res.header('Access-Control-Allow-Headers', 'Content-Type');
  res.header('Access-Control-Allow-Methods', '*');
  res.header('Content-Type', 'application/json;charset=utf-8');
  next();
});

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// app.use(cors());
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
// app.use(session({
//   secret: 'sessiontest',
//   resave: true,
//   saveUninitialized: true
// }));
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter); // 首页
app.use('/users', usersRouter); // 登录
app.use('/classify', classify); // 分类
app.use('/article', articleRouter); // 文章管理
app.use('/indexArticle', indexArticle); // 前台文章
// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
